The extensive practice activities make the book perfect for either home-study or the classroom; the 21 sections may be used in any order, making it suitable for use with any coursebook. * Explanations are clear, simple, and above all easy to remember. * Real examples show how rules work and how to avoid common mistakes. * Colour diagrams and illustrations help students understand difficult grammar points. * Practice activities show how to use the grammar correctly. * Grammar and vocabulary are practised together in special exercises. * Tests at the beginning of each section show learners what they need to practise. * Tests at the end of each section show progress.